/*
 * Copyright 2002-2004 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.springframework.richclient.tree;

import java.util.Collection;

import org.springframework.richclient.core.DescribedElement;

/**
 * A interface to be implemented by any object participating in a hierarchical
 * tree structure. For example, business objects that were linked via a graph of
 * references may implement this interface to allow for traversing the graph by
 * a client such as a user interface application.
 * 
 * @author Keith Donald
 */
public interface TreeObject extends DescribedElement {
    public TreeObject getParent();

    public Collection getChildren();

    public int getChildCount();
}